junkcollector

7 ms·

1.
by junkcollector 9y ago
Nanowatts are -60 dBm or what you would expect to receive on your cellphone when you have decent but not great signal. Many radios operate down to the -110 dBm/MHz PSD or lower ranges for high performance stuff. So you could use hits
2.
by junkcollector 9y ago
Going to be a bit pedantic here but you absolutely can have 0 Voltage. Voltage is the potential energy created by a difference in charge between 2 points. If you have a mass with sufficient free mobile charge, when you inject additional c
3.
by junkcollector 9y ago
You shouldn't remove it because it was a retweet, you should have removed it because it clearly meant the opposite of what you were implying it meant. Plenty often people get lampooned for statements that are later divorced from conte
4.
by junkcollector 9y ago
It's probably the politics that led to the roughly 50% rise in cost of living across the state in the last decade. There is little comfort to be had when you're losing your home and car because someone tells you that at least the
5.
by junkcollector 9y ago
Conceptually, pattern matching isn't wrong. It's the implementation, presentation, and gross exaggeration of efficacy that is the real problem. DNA matching is still often pseudoscience voodoo the way it is used in courts for ma
6.
by junkcollector 9y ago
I think you misunderstand. When maintenance is being done on the machine itself, yes you are going to do a lock-out tag-out routine. On the flipside, if you remote push the update and it contains for instance, a register read error on the
7.
by junkcollector 9y ago
To touch on this a bit. To be a good controls guy that does PLC programming you need to have some mechanical background to understand the equipment you are controlling, you need to know enough electrical to do the wiring and parse what your
8.
by junkcollector 9y ago
I would argue that air gaps are critical in ICS networks and PLCs because it is an extreme safety risk to push a potentially bad update from offsite without clearing the operator. The major issue will be pushing back against cost pressure
9.
by junkcollector 9y ago
Neuralink is certainly on my radar as a company to watch but I thought it was more in an invite only Ph.D heavy theory stage than a hire and build board stage. The idea to use an acoustic radio for transmission in a mostly water media is v
10.
by junkcollector 9y ago
Can you provide any technical detail about what is unique or novel about what your company does? Neither the wired article nor your company webpage has any useful information on what might differentiate you from the countless EMG devices o
11.
by junkcollector 9y ago
TI makes some MEMS devices for automotive applications, but I don't know of anything in automotive with the type of complexity involved in a DLP. Their mixed signal integrated controls are pretty nuts but not mechanical. The reason I&
12.
by junkcollector 9y ago
I got a demo of this technology close to about 10 years ago from TI. Their "killer app" in the lab was a pairing of the DLP with their DSPs to track rain while driving and reduce illumination of rain drops such that glare to the
13.
by junkcollector 9y ago
There is also the fact that the renewal vote happens on an election cycle. If the republicans hold the house, the tax cuts will be renewed. If the democrats take control, they will be forced to expire the cuts since they are planning to c
14.
by junkcollector 9y ago
I used FEKO for some time and it had the best interface for doing optimization out of the EM solvers in my opinion. The development team out of South Africa was also excellent in the brief times I got to work with them directly. Unfortuna
15.
by junkcollector 9y ago
Most discussions centered on environmental concerns boil down to accepting a massive quality of life reduction for most of the world's population. It is usually colored by someone who thinks it wouldn't impact themselves much and
16.
by junkcollector 9y ago
From a purely signal point of view, if you have a good characterization of the drone sound (your training set) and of the noise, then the appropriate filter would be something along the lines of a weiner type which statistically maximizes t
17.
by junkcollector 9y ago
I can personally attest that every place on that list is pretty damn nice except for Grand Rapids which is to damn cold! They all have low cost of living and a solid tech scene as well.
18.
by junkcollector 9y ago
Summing multiple measurements will grow the noise at the rate of the sum of the squares (also called the 2 norm) because noise is hopefully uncorrelated. The signal, because it is correlated, will sum simply so that with enough measurement
19.
by junkcollector 9y ago
I would say, before you dive into multi-fractal stochastic calculus, maybe take a step back and work on some fundamentals that have been used to solved this problem before. Look up Kalman filtering, Doppler filters, correlations, and micro
20.
by junkcollector 9y ago
I think that malanj's point is that the article is disingenuous because it compares the Green Array chip to an MSP430 product under a set of operational conditions specifically designed to maximize the MSP430 power consumption while ex
21.
by junkcollector 9y ago
A voltage controlled varactor can be made from 2 non-complimentary mosfets with a common body bias. The differential amplifier can be done with as little as 3 additional fets, but probably more on the order or 7-10 for performance reasons.
22.
by junkcollector 9y ago
I've dealt with it in the state fire code for Massachusetts and Maryland. I believe it is also in the New York and New Jersey code books. I'm unsure of other states but, it is a relatively recent adoption in all of the aforement
23.
by junkcollector 9y ago
Fire code requires that fire alarms be networked to alert people in all rooms in the event of a fire. Older un-networked units are grandfathers until you begin replacement. Wifi networking is allowed by the code, but for obvious reasons,
24.
by junkcollector 9y ago
Given how undiversified Facebook's revenue is; I wonder if they would have a short violent death or a long drawn out one when market share slips.
25.
by junkcollector 9y ago
A sufficiently large radio system built on Mars or at its solar LaGrange point could provide the shielding effect that is normally the responsibility of the magnetosphere. It was studied for feasibility by NASA and found possible with curr
26.
by junkcollector 9y ago
The internet like several large systems people depend on were created by major institutions for major institutions and any attack on them would weaken the institution doing the attacking. Bitcoin however, was created mainly to circumvent m
27.
by junkcollector 9y ago
When a proper developer builds a home or sub-division in Houston, they bring in fill dirt and do compactions until the houses rest on small hills. You get frequent flooding (about once a year) but it rarely reaches the house before the flo
28.
by junkcollector 9y ago
These mosquitoes have undergone induced sterilization. By definition their evolution is completely controlled.
29.
by junkcollector 9y ago
Perhaps it started as a joke and mistakenly became a business, like the fellow who got elected in Australia?
30.
by junkcollector 9y ago
Wave would have made a nice additional to that suite. I miss Google Wave. I've built 3 projects that relied on Google services/APIs; none of them exist anymore. I will never build another Google based product as long as I live.

More ›